Mary, the name on the marriage record is incorrect. It is not Cagan, it is Eagan. Someone miscopied something somewhere along the line. I've seen the original record at the Iowa County Courthouse, and the writing is so "flowery" that it would be easy to misread. Margaret Mullen Darby is the daughter of Francis Mullen and Elizabeth Eagan. John Mullen is the oldest son of Francis and Elizabeth and married my great grandmother Mary Jane Hart. The mystery for me has been the Eagans. They had to have been closeby somewhere else in Iowa County, and I have not been able to find them or any of their descendents.